thai lady friend wants to visit ireland. advice please

i have a thai lady friend, thai cirizen. she has a valid austrailian passport , she is living now in thailand and will not return to oz. she has told me she would like to come to see ireland , she loves the pictures of the scenery etc here so now is a good time of year for her to come.

so, will she have any issues coming into dublin , clearing immigration , then travelling to belfast to stay here with me ?

what documents will she need, evidence of our relationship etc ? or is this really needed ? as i say she has valid aussie passport.

kind regards

dmax

If she has a valid Australian passport, then she is also an Australian citizen; therefore, she doesn't need any form of visa to visit Ireland. She will be able to stay for 3 months completely visa free.